Here’s my list of the 10 smallest frogs and toads in the world. I determined the order by the frog’s max size. This is what my research found but if you find a smaller one, don’t hesitate to holla at me.
At 10.9 mm, Paedophryne kathismaphlox is 10th smallest frog in the world.
Stumpffia yanniki measures in at 9.8 –10.6 mm, making it the 9th smallest frog
Gardiner’s frog (Sechellophryne gardineri) is only 10.1 mm long, make it the 8th smallest frog.
Monte Iberia eleuth (Eleutherodactylus iberia) maxes out at 10 mm. 7th smallest frog
Izecksohn’s toad (Brachycephalus didactylus) is only 9.8 mm long. It’s the 6th smallest frog
Paedophryne verrucosa is the 5th smallest frog, only being 9.3 mm max.
Paedophryne dekot is the 4rd smallest frog in the world. It measures in at a max of 9 mm.
Stumpffia contumelia is the 3rd smallest frog, measuring between 8.0 –8.9 mm
The second smallest frog in the world is the Paedophryne swiftorum measuring in at 8.6 mm.
The smallest frog in the world is Paedophryne amauensis. It is only 7.9 mm long.